摘要
研究了 Snow Spring 大白菜(Brassica pekinesis)(日本品种)在0℃和4℃下,不同 O_2%和 CO_2%配比对减少大白菜贮藏损失的影响和气调贮藏中所发生的生理失调。结果表明:气调贮藏的效果受气体成分、温度和贮藏时间长短的综合影响。在0℃和4℃下,本实验的各种气体成分中贮藏70d 的大白菜的总损失未出现显著差异,但贮藏112d 后,0℃下2%O_2-1%CO_2和4%O_2-1%CO_2的气体成分可以明显降低大白菜的贮藏损耗,前者较后者的效果更好。大白菜的叶脉褐变仅在0℃发生而且不受气体成分的影响。在0℃下贮藏112d 水浸斑出现,其严重程度主要与 CO_2浓度有关,5%CO_2水浸斑最严重。大白菜贮藏前在20℃的呼吸强度平均值为:12.80mL/kg/h,贮藏后各处理的呼吸强度稍有增加,2%O_2-5%CO_2中白菜因腐烂严重,呼吸强度高达24.75mL/kg/h。贮藏前后的乙烯释放量几乎没有差异,贮藏中未见脱帮现象。
Chinese cabbage was held in simulated air and controlled atmos- pheres [O_2%-CO_2%],2-1,2-5,4-1,and 4-5 for 112 days at 0℃ and 4℃.There were some differences in effect of the atmospheres on percent decay,loss in fresh weight and disorders,two disorders appeared.One in all atmospheres was a brownish discoloration of the leaves particularly in the main rib area at 0℃, but not at 4℃.Another one was water socked spots which were transparent and shining in the midribs.They appeared at 0℃ after 112 days and were affec- ted by high CO_2(5%) .Some ethylene accumulated in the chambers,but there was no leaf abscission,although ehtylene accumulation in some cases was rela- ted to high trim loss.The respiration increaced slightly after storage and there was no any change in release of ethylene.
关键词
大白菜
气调贮藏
乙烯
生理失调
Chinese cabbage
controlled atmosphere storage
ethylene
disorder
